Portable heater



FIG. 1 is a right perspective view of a portable heater showing our newdesign;

FIG. 2 is a left perspective view thereof;

FIG. 3 is bottom perspective view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a right side view of thereof;

FIG. 6 is a rear view of thereof;

FIG. 7 is a left side view of thereof;

FIG. 8 is a top view of thereof; and,

FIG. 9 is a bottom view of thereof.

The evenly-spaced dashed lines in the drawings depict portions of theportable heater that form no part of the claimed design. The dot-dotlines illustrate the boundaries of the claim and form no part of theclaimed design.

CLAIM The ornamental design for a portable heater, as shown anddescribed.